Improvement in composition for paving-blocks



UNITED STATES PATENT OFFICE.

JAMES S. WETHERED, OF NEW YORK, N. Y.

IMPROVEMENT IN COMPOSITION FOR PAVING-BLOCKS.

Specification forming part of Letters Patent No. 195,318, datedSeptember 18, 1877; application filed June 25, 1877.

To all whom it may concern:

Be it known that I, JAMES S. WE'lHERED, of the city, county, and Stateof New York, have invented a new and Improved Composition forPaving'Blocks, of which the following is a specification:

This invention relates to a compound for paving-blocks and otherpurposes; and it consists in a composition formed by mixing pulverizedslag with asphaltum and heavy petroleum or other non-drying oils.

In carrying out my invention I take seventeen parts' of asphaltum(Trinidad preferred) and subject it to a slow heat until it becomesliquid. I then add three parts of heavy petroleum or other fixed oil,and thoroughly mix them together, and while this mixtnreis still hotIadd eighty parts of broken, granulated, or pulverized iron or otherslag, or its equivalent, which has been previously heated. I then, byaid of suitable machinery, thoroughly incorporate theingredients whilein a heated state, and form the composition into blocks, which I subjectto heavy pressure in molds.

I do not confine myself to the exact proportions herein stated, as theproportion of oil may be varied to suit the quality of the asphaltum,the oil being one of the most essential ingredients, as it renders theblock elastic and durable.

Having thus described my invention, I claim as new and desire to secureby Letters Patout- A compressed block formed of seventeen parts ofasphaltnm, three parts of mineral oil, and eighty parts of pulverizediron-slag, as

described.

JAMES S. WETHERED. Witnesses 0. SEDGWIGK,

ALEX. F. ROBERTS.

